Tennessee Valley Authority Officials Say The Public Facilities That Were Closed For The Repair Of A Sinkhole At Boone Dam Will Once Again Be Open By Memorial Day Next Year. Technical Director Of The Repair Project, Chris Saucier Said Everything You Were Able To Do Before The Work Started, You’Ll Be Able To Do Again. Work Has Been Underway Since 2015 And Is Expected To Be Fully Completed By The Summer Of 2022.